iommufd/fault: Add an iommufd_fault_init() helper

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The infrastructure of a fault object will be shared with a new vEVENTQ
object in a following change. Add an iommufd_fault_init helper and an
INIT_EVENTQ_FOPS marco for a vEVENTQ allocator to use too.

Reorder the iommufd_ctx_get and refcount_inc, to keep them symmetrical
with the iommufd_fault_fops_release().

Since the new vEVENTQ doesn't need "response" and its "mutex", so keep
the xa_init_flags and mutex_init in their original locations.

Link: https://patch.msgid.link/r/a9522c521909baeb1bd843950b2490478f3d06e0.1741719725.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Nicolin Chen 2025-03-11 12:44:20 -07:00 • committed by Jason Gunthorpe

parent dbf00d7d89

commit 927dabc9aa

1 changed files with 42 additions and 28 deletions

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drivers/iommu/iommufd/fault.c

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